...live to argue. Just live for it.
If there's nothing to say that won't get one's neighbor ruffled, disgruntled or otherwise in a negative state, typically with a subtle insult or patronization thrown in just to make sure they've made a nice big impression, then it's just, well, not worth saying in such a person's eyes.
You can always tell the type. And I'd bet dollars to LC donuts that every person reading this is nodding his or her head and saying, "Yes. I know one of those."
Two words. Or one hyphenated phrase. Attention-seeking....